Electric igniter for hydrocarbon-engines.



PATENTED' MAY 19, 1903.

H. M Mofl ALL. ELECTRIC IGNITER FOR HYDROOARBON ENGINES.

APPLICATION FILED FEB. 27. 1902. I

2 SHEETSSHEET 1.

NO MODEL.

No 728;?47. V

v PATENTED MAY 19', 1903. H. M. MoGALL. ELECTRIC IGNITEB. FORHYDROGARBON ENGINES.

APPLICATION FILED FEB. 271 1902.

2 SHEETS-SHEET 2.

:60 MODEL.

UNITED STATES HARRY M. MOOALL, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TOPITTS Patented May 19, 1903.

PATENT OFFICE.

BURG GAS ENGINE COMPANY, OF PITTSBURG, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 728,747, dated May 1 9,1903. Application filed February 27. 1902. semrno. 95,910. (N model.)

To all whom it may concern.-

Be it known that I, HARRY M. MCCALL, a citizen of the United States,residing at'Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented a certain new and useful Electric Igniterfor Hydrocarbon- Engines, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention has relation to electric igniters forhydrocarbon-engines; and it consists in the novel construction andarrangement of its parts, as hereinafter described.

The object of the invention is to provide an electric igniter havingcontact-points adapted to engage each other and a means for bringingsaid points together, a means being provided for regulating the forcewith which the contact-points are brought together, the device being soconstructed that the force of the blow of the contact-points may beregulated while the igniter is in operation, thereby enabling theoperator to delicately adjust the parts to meet particular requirements.

In the accompanying drawings, Figure l is a side elevation of ahydrocarbon-engine having my electric igniter attached thereto. Fig. 2is a top plan view of the igniter. Fig. 3 is a horizontal sectional Viewof the igniter. Fig. 4 is a transverse sectional view of the igniter,showing one position of the parts. Fig. 5 is a view of the inner end ofthe igniter, showing one position of the parts. Fig. dis a view of theinner end of the igniter, showing the position of the parts when contactbetween the igniter-points is broken. Fig. 7 is a view of the inner endof the igniter, showing the position of the parts when contact betweenthe igniting-points is about to be broken. Fig. 8 is a view of the innerend of the igniter, showing the position of the parts when contactbetween the igniting-points is closed. Fig. 9 is a sectional view of theigniter, showing the shaft-hammer in its elevated position; and Fig. 10is a perspective view of the hammer in my invention, and Fig. 11 is aperspective view of the anvil in my invention.

The igniter consists of the barrel 1, which extends through the side ofthe combustionchamber of the hydrocarbon -engine. The

'end of the Wire 15.

shaft 2 is journaled in said barrel and is provided at its inner endwith a contact-point 3.

The anvil 4 is rigidly fixed to the shaft 2, said anvil having a lip 5.The hammer 6 is provided with bifurcated ends, which pass on either sideof the anvil 4:, the said bifurcated ends being loosely journaled on theshaft 2. A coil-spring 7 surrounds the shaft 2 and is secured at one endto the jam-nuts 8, which are fixed to the end of the shaft 2, and at itsother end the saidcoil-spring 7 is fixed to the sideof the hammer 6 atthe point 9. (See Fig. 2.) The bolt 10 is provided at its inner end withan electric contact-point 11. Said bolt 10 passes through the barrel 1parallel to the shaft 2. The insulation 12 surrounds said bolt 10. Thearm 13 is connected to the outer end of the bolt 10, said arm 13 beingprovided with a binding-post 14, which receives the The electriccontactpoints 3 and 11 are adapted toassume two positions with relationtoeach other, one as shown in Fig.' 6 and the other as shown in Fig. 7,while the hammer 6 is adapted to assume three positions, one as shownFig. 8, when its outer end is elevated and the points above referred toare brought in contact with each other. A second position is as shown inFig. 7, when the hammer 6 is in a horizontal position and the electricsparking-points are still in contact with each other. A third positionis shown in Fig; 6, when the hammer 6 is slightly depressed at its outerends and the electric sparking-points above referred to are disconnectedfrom each other.

The device is operated by means of the cocentric 16, fixed on across-shaft 17, as shown in Fig. 1. The pitman 18ois provided at-itslower end with a vring, which'surrounds the cam 16. The upper end ofsaid pitman passes through the guide 19, the said pitman being providedwith a collar 20, which is provided with a sharpened edge adapted tolift the outer end of the hammer 6 as the pitman 18 is elevated andcause said dog to make a partial revolution on the shaft 2, and as theouter end of said dog 6 moves upward the tension of the coil-spring 7 isincreased, and when the edge of the collar 20 passes beyond the free endof the hammer 6 the tension'of the said spring 7 causes the free end ofsaid hammer 6 to descend with a snap, the body of the hammer strikingthe lip of the anvil 4. and causing the shaft 2 to make a partialrevolution, which separates the points 3 and 11. Thus contact betweenthe said points is broken and a spark is produced, the current passingfrom the wire 15 through the post 14:, arm 13, to bolt 10, to point 11,and when in cont-act with point 3 through the last said point to shaft2, to barrel 1, from which point it is. grounded by any suitable means(not shown in the drawings) and carried back to the point of generation.As the shaft 17 is revolved (see Fig. 1) the pitman 18 is reciprocatedsubstantially perpendicularly and the operation above described isrepeated. The eccentric 16 may be so located on the shaft 17 as to causethe contact-points 3 and 11 to come together or separate at any desiredtime. The spark caused by the separation of the contact-points 3 and 11ignites the gases in the combustion-chamber and pro: duces theexplosion. It will be observed that the contact-points 3 and 11 are incontact only while the free end of the hammer 6 is being elevated. Atother times the contactpoints 3 and 11 are separated from each other ina manner as shown in Fig. 6, the stop 21 being so located as to limitthere'volution of the shaft 2 as the end ofthe contact-point support 22,which is located at the end of the said shaft 2, comes in contact withthe side of said stop.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

An electric igniting device for hydrocarbon-e'ngi nes consisting of arocking shaft suitably journaled, a contact-point carried by said shaft,a stationary contact-point located within the path of the first saidcontact-point,

HARRY IWI. MCOALL.

Witnesses:

DAVID A. Runs, W. H. WILLIAMS.

